Elioak is an unincorporated community in Howard County, Maryland, United States. It was the home of the "Pushpin Farm", a 200-acre slave plantation purchased in 1724 in the Howard District of Anne Arundel County by Col. Edward Dorsey and which is the site of many prominent Dorsey family graves. The postal community was named after the Elioak plantation built by Owen Dorsey, Judge of the Baltimore Orphans' Court.